Chiwira finished seventh in 4 x 400 metres relay at the 1997 World Championships, together with teammates Phillip Mukomana, Savieri Ngidhi and Ken Harnden. The team set a Zimbabwean record of 3:00.79 minutes during the heats.
The name "Tawanda" in the Zimbabwean dialect of Shona means, " We are now many." Shona is one of the two main languages spoken in Zimbabwe by the Natives, the other language is Ndebele. Most of Zimbabwe can speak and understand English.